Burner.



- No. 724,957. PATENIBD APR.. 7,1903.

N. SHABPFBR.

BURNER.

APPLIUATION'HLBD JAN. 5. 190s.

' N0 MODEL.

Avices for Bunsen burners, and V'has for its which- UNITED lSTATE-SPATENT OFFICE.

NOHAE SHAJEFFER, OF PITTSBURG, PENNSYLVANIA.

BURNER.

SPECIFICATION forming part-of Letters Patent No. 724,957, dated April 7,1903.

Application iled January 5, 1903.

To all whom t may concern:

Be it known that I, NOEAE SHAEEFER, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inBurners, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to certain new and useful improvements inair-regulating demain object the construction'of ya simple and efficientdevice by means of whicha quantity of air admitted for mixture with thegas may be controlled, so as to obtain a more perfect combustion.

Briefly described, my invention comprises a substantially sphericalshell which is interposed between the Bunsen tube and the base or spudof the burner. Y The shell comprises two substantially semicircularmembers which are suitably connected together, one being joined to theBunsen tube and the other to the base or spud. The lower member orsection of the spherical shell is provided with a plurality ofair-openings, and mounted within the lower section or member for partialrotation therein is an inner shell which has integral linger-piecesadapted to operatein slots provided therefor inthe upper section ormember. The inner section or member is adapted when rotated in o nedirection to close the air-ports and when moved in the oppositedirection to open said ports for the admission of air. 1n describing theinvention in detail reference is had to the accompanying drawings,forming a part of this` speciiication, and wherein like numerals ofreference indicate like parts throughout ,the several views, in

Figure 1 is a side elevation showing the air ports or ventspartiallyopened. Fig. 2 is a central vertical sectional view. Fig. 3 is ahorizontal sectional view.

As stated,y the device comprises an upper semicylindrical section ormember 1, which may be cast integral with the Bunsen tube 2. Near itslower edge this upper member or section l is provided at opposite sideswith Serial No. 137,858. (No model.)

slots 3 3. The lower section or member 4 is substantially hemisphericalin shape, lian ged outwardly at its rim or upper edge 5 to receivetherein the lower edge of the upper member or section 1, and after beingso fitted together the sections or members are rigidly secured togetherby small screws 6 6 or like equivalent means. The lower section ormember 4 is provided with a pluralityof airports 7 7, the section beingdivided into equal proportions of open spaces and solid Vspacestherebetween-that is, each open space being of asize equal to the solidspace between each two of the openings.A The lower section or member 4is securely fitted to the base or Spud 8, which is adapted to connectonto the gas-bracket. (Not shown.)-4v Mounted within the lower section4, to partially rotate therein, is a gate or closure member 9, which,like the lower section or member 4, is composed of a series of solidportions separated by the spaces. With two of the solid portions formingthe gates or closures for the openings in the lower section or member 4are formed two outwardly-extending fingers 10, which operate in theYslots 8. When these fingers are forced in one direction, the solidportions of the gate or closure member 9 will be placed over theopenings 7 in the lower section or member 4, and when the gate orclosure is gate or, closure member' is preferably made flat to rotatefreely on the neck of the base or spud upon the threaded portionthereof, the lower section or member 4 being threaded onto said neck. Inorder to give support-to the lower section or member, I may employ asupporting-bracket 12, cup-shaped in its form, which is placed over theneck of the baseer spud prior to inserting the lower sectionor memberthereon.

y The lower section or member 4 is held on the base or spud by means ofa nut 4'., which is placed ,over the neck of the base or spud prior toplacing the gate or closure member ,in position over the neck.

It will be noted that various changes may luu be made in the details ofconstruction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. Au air-regulating device for Bunsen .burners com risin T asubstantiall Y s herical D .l D

shell, composed of two members connected together, a tube connecting theupper member and made integral therewith, the opposite sides of the saidupper member being provided with slots, the lower member being providedwith air openings or vents embodying substantially half of the saidlower member, a base upon which said shell is mounted, a gate or closuremounted for rotation in the lower member, lingers made integral with thesaid lower member and adapted to project through the said slots, and anut for holding NOHAE SHAEFFER.

Witnesses:

H. C. EVERT, A. M. WILSON.

